Table 2.
Association of Quartiles of Intentional Physical Activity With CRVE and CRAE Measures for All MESA Participants and Stratified by Race/Ethnicity, United States, 2002–2004
| Intentional Physical Activity (MET-minutes/week) | CRVE, μm |
CRAE, μm |
||||||
| Model 1a |
Model 2b |
Model 1a |
Model 2b |
|||||
| Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | |
| All participants | ||||||||
| Quartile 4 (≥1,838) | 213.4 | 212.3, 214.5 | 217.8 | 216.5, 219.1 | 143.8 | 143.0, 144.5 | 144.5 | 143.6, 145.3 |
| Quartile 3 (751–1,837) | 214.3 | 213.2, 215.4 | 217.8 | 216.5, 219.1 | 144.3 | 143.6, 145.0 | 144.8 | 144.0, 145.7 |
| Quartile 2 (53–750) | 215.6* | 214.5, 216.7 | 218.8 | 217.5, 220.0 | 143.8 | 143.1, 144.6 | 144.1 | 143.3, 144.9 |
| Quartile 1 (<53) | 218.4** | 217.3, 219.4 | 220.1* | 218.9, 221.3 | 145.1* | 144.3, 145.8 | 144.3 | 143.5, 145.1 |
| Non-Hispanic whites | ||||||||
| Quartile 4 (≥2,070) | 205.2 | 203.5, 206.9 | 208.2 | 205.9, 210.4 | 142.8 | 141.7, 143.9 | 144.4 | 142.9, 145.9 |
| Quartile 3 (976–2,069) | 205.1 | 203.5, 206.8 | 208.3 | 208.1, 212.6 | 142.7 | 141.6, 143.8 | 144.3 | 142.8, 145.8 |
| Quartile 2 (248–975) | 206.6 | 204.9, 208.3 | 209.9 | 206.1, 210.5 | 141.6 | 140.5, 142.7 | 143.5 | 141.9, 144.4 |
| Quartile 1 (0–247) | 210.1** | 208.4, 211.7 | 210.7* | 208.6, 212.8 | 143.7 | 142.6, 144.9 | 143.9 | 142.5, 145.3 |
| Blacks | ||||||||
| Quartile 4 (≥1913) | 220.8 | 218.7, 222.9 | 226.1 | 223.5, 228.6 | 145.3 | 144.0, 146.7 | 145.4 | 143.7, 147.1 |
| Quartile 3 (736–1,912) | 220.4 | 218.3, 222.5 | 225.0 | 222.5, 227.5 | 145.2 | 143.8, 146.6 | 145.6 | 144.0, 147.2 |
| Quartile 2 (1–735) | 223.8 | 221.6, 226.0 | 227.3 | 224.8, 229.7 | 145.6 | 144.2, 147.0 | 145.4 | 143.8, 147.0 |
| Quartile 1 (0) | 223.3 | 221.3, 225.4 | 226.4 | 224.1, 228.7 | 145.5 | 144.2, 146.9 | 145.2 | 143.7, 146.7 |
| Hispanics | ||||||||
| Quartile 4 (≥1,470) | 212.5 | 210.2, 214.8 | 217.4 | 214.7, 220.2 | 143.9 | 142.4, 145.4 | 145.8 | 144.0, 147.5 |
| Quartile 3 (496–1,469) | 218.5** | 216.3, 220.7 | 220.1 | 217.5, 222.6 | 146.9* | 145.5, 148.4 | 147.2 | 145.5, 148.8 |
| Quartile 2 (1–495) | 218.0* | 215.1, 220.8 | 219.6 | 216.6, 222.6 | 146.1 | 144.2, 147.9 | 146.5 | 144.6, 148.5 |
| Quartile 1 (0) | 220.3** | 218.3, 222.2 | 221.1* | 218.7, 223.6 | 146.6* | 145.3, 147.8 | 146.4 | 144.8, 148.0 |
| Chinese | ||||||||
| Quartile 4 (≥1,670) | 214.5 | 211.5, 217.6 | 217.9 | 214.0, 221.9 | 143.6 | 141.5, 145.7 | 143.3 | 140.5, 146.1 |
| Quartile 3 (736–1,669) | 214.5 | 211.3, 217.7 | 218.8 | 214.9, 222.8 | 141.8 | 139.6, 144.0 | 141.8 | 139.0, 144.6 |
| Quartile 2 (105–735) | 214.6 | 211.7, 217.5 | 218.3 | 214.6, 221.9 | 142.4 | 140.4, 144.4 | 142.3 | 139.7, 144.9 |
| Quartile 1 (<105) | 219.0** | 215.9, 222.0 | 221.4 | 217.6, 225.2 | 144.4 | 142.3, 146.5 | 142.2 | 139.5, 144.9 |
Abbreviations: CI, confidence interval; CRAE, central retinal artery equivalent; CRVE, central retinal vein equivalent; MESA, Multi-Ethnic Study of Atherosclerosis; MET, metabolic equivalent.
* P < 0.05; **P < 0.001 for the difference in marginal means in μm compared with quartile 4, which is the reference category.
Adjusted for age, gender, and race/ethnicity.
Adjusted for age, gender, race/ethnicity, clinic site, educational attainment, current smoking, diabetic status (present/absent/impaired fasting glucose), presence of hypertension, body mass index, serum triglycerides, C-reactive protein, television viewing time, and venular caliber (in models of arteriolar caliber) and arteriolar caliber (in models of venular caliber).